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LTC4121IUD#PBF - Analog Devices

Description: Battery Management 40V 400mA Synchronous Step-Down Battery Charger

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LTC4121IUD#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4121IUD#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 16-Lead Plastic QFN (3mm × 3mm)+
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LTC4121IUD#PBF - Analog Devices - 3D model - Quad Flat No-Lead - 16-Lead Plastic QFN (3mm × 3mm)+
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LTC4121IUD#PBF Details

  • Manufacturer Part Number:

    LTC4121IUD#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-16

  • Pin Count:

    16

  • Manufacturer Package Code:

    05-08-1691

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • JESD-30 Code:

    S-PQCC-N16

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC16,.12SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Supply Voltage-Max (Vsup):

    40 V

  • Supply Voltage-Min (Vsup):

    4.4 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Threshold Voltage-Nom:

    +2.21V

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    3 mm

LTC4121IUD#PBF Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the high-current paths.
  • Use a soft-start circuit to limit the inrush current during startup, and ensure the input voltage ramps up slowly. During shutdown, use a controlled shutdown sequence to prevent voltage spikes.
  • A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended. The capacitor should be placed close to the IC and have a voltage rating of at least 2x the maximum input voltage.
  • Use a thermal camera to check for hotspots, and verify the input voltage, output voltage, and current sense resistor values. Check for proper PCB layout, component selection, and soldering quality.
  • Yes, the LTC4121IUD#PBF can operate in high-temperature environments, but the maximum junction temperature (TJ) should not exceed 125°C. Derate the output current and ensure proper heat sinking to prevent overheating.

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LTC4121IUD#PBF Overview

Use the download button to access the LTC4121IUD#PBF schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LTC41, or try a keyword search, such as Power Management Circuits

About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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